Square-Stemmed Willow Herb
Epilobium tetragonum

Family: Onagraceae

What it is like

Epilobium tetragonum is a PERENNIAL growing to 0.6 m (2ft). It is in flower from July to August. The species is hermaphrodite (has both male and female organs). The plant is self-fertile. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Height (m): 0.6

Where it is found

Damp woodland clearings, hedgebanks, ditches and cultivated soil.

Europe, including Britain, from Sweden south and east to W. Asia.

Conservation Status:

Countries/locations it is found in

How it is used

Food

Rating: 1

Leaves - cooked. Used as a vegetable.

Medicine

Rating: 0

Other

Rating:

How it is grown

Succeeds in most soils, preferring a well-drained but moisture retentive soil in a sunny position.

Propagating it: Seed - sow early spring in situ or as soon as the seed is ripe. Division in spring or autumn. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.

Best place to grow: Woodland Garden Dappled Shade; Shady Edge; Hedgerow;

Habit: Perennial

Hardiness:

Growth:

Soil: Light (sandy), medium, heavy (clay)

Shade: Semi-shade, no shade

Moisture: Moist

Things to keep in mind

Its other names

Local names

Synonyms

E. adnatum.